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-rw-r--r--globals.h57
1 files changed, 57 insertions, 0 deletions
diff --git a/globals.h b/globals.h
index ea502a4111..e741ebb52b 100644
--- a/globals.h
+++ b/globals.h
@@ -1,3 +1,28 @@
+/* globals.h
+ * Global defines, etc.
+ *
+ * $Id: globals.h,v 1.3 1999/09/10 07:19:40 guy Exp $
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@zing.org>
+ * Copyright 1998 Gerald Combs
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
#ifndef __GLOBALS_H__
#define __GLOBALS_H__
@@ -21,6 +46,38 @@
#include "timestamp.h"
#endif
+#define MIN_PACKET_SIZE 68 /* minimum amount of packet data we can read */
+
+/* Byte swapping routines */
+#define SWAP16(x) \
+ ( (((x) & 0x00ff) << 8) | \
+ (((x) & 0xff00) >> 8) )
+#define SWAP32(x) \
+ ( (((x) & 0x000000ff) << 24) | \
+ (((x) & 0x0000ff00) << 8) | \
+ (((x) & 0x00ff0000) >> 8) | \
+ (((x) & 0xff000000) >> 24) )
+
+/* Byte ordering */
+#ifndef BYTE_ORDER
+ #define LITTLE_ENDIAN 4321
+ #define BIG_ENDIAN 1234
+ #ifdef WORDS_BIGENDIAN
+ #define BYTE_ORDER BIG_ENDIAN
+ #else
+ #define BYTE_ORDER LITTLE_ENDIAN
+ #endif
+#endif
+
+/* From the K&R book, p. 89 */
+#ifndef MAX
+ #define MAX(x, y) ((x) > (y) ? (x) : (y))
+#endif
+
+#ifndef MIN
+ #define MIN(x, y) ((x) < (y) ? (x) : (y))
+#endif
+
extern FILE *data_out_file;
extern packet_info pi;
extern capture_file cf;